they are talking about the flywheel i would say
u can get an after market clutch from any car part shop
i am getting a heavy duty clutch setup from RPM (thats the brand) and it is costing me $150 bucks but that is trade price so about $200 to $250 plus the cost of getting the fly wheel machined. $50
but it an absolute cunt of a job todo, but i have heard from guys at my work that it can be done with out removing the gear box from the car but just pushing it into the guard out of the way enought to get and the flywheel.
if u take it to a toyota dealer ship 1000 is about right as they will pull the motor out as thats how the workshop manual says to do it.